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Chemistry
Chemistry
College
5. An empty tank contains 11.0L of air at 21C and latm= (1.013x10 Pa). When the tank is filled with hot air from a compressor, the temperature is 42C and the gauge pressure is 2.11 x 10 Pa. What mass of air was added?
Chemistry
High School
calculate the grams of ethane present in a sample containing 0.3393 moles if the molar mass of ethane is 30.067 g/mol.
Chemistry
High School
A solution is made by adding 73 g of sodium nitrate to 135 g of water. What is the mass percentage of sodium nitrate in this solution? Select the correct answer below: a. 35.1% b. 67.3% c. 73.6% d. 82.4%
Chemistry
High School
calculate the adiabatic flame temperature of propane (c3h8) burned in stoichiometric air at 25c, 1atm, to within 25 degrees c error.
Chemistry
High School
What most likely would happen if easily accessible gold reserves were reduced?
Chemistry
High School
How would the reading on a barometer change if you were to take one on a trip from los angeles to Lake Tahoe, which is at a much higher altitude?
Chemistry
College
In which case are the white balls the maximum distance, and the maximum angle apart?
Chemistry
College
If the volume of a gas at -40.0C is doubled to 80.0 L, calculate the final temperature in degrees Celsius.
Chemistry
High School
What is the function of a buffer?
Chemistry
High School
Sam records the mass of his evaporating dish as 6. 251 g. He records the mass of the evaporating dish and the sample of hydrate as 16. 864 g. After heating the sample in the evaporating dish to constant weight, the mass of them combined is 11. 13 g. How many moles of water were removed from the sample by the heating process?Report your answer with three digits after the decimal
Chemistry
High School
how many moles of aluminum nitrate are obtained from the reaction of 0.75 mol of silver nitrate with a sufficient amount of aluminum?
Chemistry
College
Why would the calculations of hydrogen peroxide be lower them the actual number in the bottle?
Chemistry
High School
the structures of d-gulose and d-psicose are shown above. what test could be used to distinguish between solutions of these two carbohydrates? explain your answer by predicting the results of the test for each sugar.
Chemistry
College
What does X represent for this transmutation? 9 4Be + 4He X+ on ?
Chemistry
College
When dinitrogen pentoxide is heated, it decomposes tonitrogen dioxide and oxygen. How many moles of nitrogendioxide can be formed from the decomposition of 1.25 g ofdinitrogen pentoxide?
Chemistry
High School
what is the concentration of a solution formed by diluting 5.00 ml of a 3.20 m glucose solution to 40.0 ml?
Chemistry
High School
what information can be gained from the quantum mechanical treatment of the optical properties of metals which cannot be obtained by the classical treatment?
Chemistry
High School
what volume would be occupied by 100.0g of oxygen gas at a pressure of 1.5atm and a temperature of 25c?
Chemistry
College
Solve the ideal gas equation for moles PV = nRT
Chemistry
College
50 points + brianlist there's others on my profileWhich type of process is this. Chemical Process Physical Process Nuclear Process
Chemistry
High School
Observations CuSO4 & NH4Cl Conventional, total ionic, net ionic
Chemistry
High School
The reactionAB2C(g) B2(g) + AC(g)reached equilibrium at 900 K in a 3.60 Lvessel. At equilibrium 0.0870 mol of AB2C,0.0110 mol of B2, and 0.0260 mol of AC weredetected. What is the equilibrium constantat this temperature for this system?
Chemistry
High School
How can I convert 9.3 x 10^-3 moles of SmO to grams
Chemistry
High School
select the classification for the following reaction. 2i(aq) cl2(aq) i2(aq) 2cl(aq)
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